公开(公告)号：US06549670B1

公开(公告)日：2003-04-15

申请号：US09359360

申请日：1999-07-21

申请人： Kazushi Sato ,  Kenji Komori ,  Tetsuo Kaneko ,  Satoshi Mitsuhashi ,  Masami Goseki ,  Takao Terao ,  Naofumi Yanagihara

发明人： Kazushi Sato ,  Kenji Komori ,  Tetsuo Kaneko ,  Satoshi Mitsuhashi ,  Masami Goseki ,  Takao Terao ,  Naofumi Yanagihara

IPC分类号： G06K936

CPC分类号： G06F17/147 ,  H04N19/117 ,  H04N19/122 ,  H04N19/132 ,  H04N19/154 ,  H04N19/156 ,  H04N19/159 ,  H04N19/16 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/523 ,  H04N19/59 ,  H04N19/61 ,  H04N19/80 ,  H04N19/90

摘要： An MPEG downdecoder is to be provided which eliminates pixel dephasing with the field DCT mode and the frame DCT mode without detracting from picture characteristics proper to interlaced pictures. To this end, a decimating IDCT unit 14 effectuates 4×4 decimating IDCT if the DCT mode is the field mode. If the DCT mode is a frame mode, a decimating IDCT unit 15 effectuates IDCT on the totality of coefficients of a DCT block to separate the coefficients into two pixel blocks associated with interlaced scanning. The decimating IDCT unit 15 executes DCT on the separated two pixel blocks. The low-frequency components of the two pixel blocks are processed with IDCT and the two pixel blocks are synthesized.

摘要翻译： 将提供一种使用场DCT模式和帧DCT模式消除像素去相位而不降低隔行扫描图片的图像特性的MPEG下变频器。 为此，如果DCT模式是场模式，则抽取的IDCT单元14实现4×4抽取IDCT。 如果DCT模式是帧模式，则抽取IDCT单元15对DCT块的系数的总和进行IDCT，以将系数分离成与隔行扫描相关联的两个像素块。 抽取的IDCT单元15在分离的两个像素块上执行DCT。 用IDCT处理两个像素块的低频分量，并合成两个像素块。

公开(公告)号：US06714592B1

公开(公告)日：2004-03-30

申请号：US09711331

申请日：2000-11-13

申请人： Yu Liu ,  Naofumi Yanagihara ,  Kazushi Sato ,  Takeshi Kubozono ,  Shintaro Okada

发明人： Yu Liu ,  Naofumi Yanagihara ,  Kazushi Sato ,  Takeshi Kubozono ,  Shintaro Okada

IPC分类号： H04N712

CPC分类号： H04N19/40 ,  H04N19/124 ,  H04N19/149 ,  H04N19/152 ,  H04N19/177 ,  H04N19/61

摘要： A picture information conversion method and apparatus in which, if the compressed picture information with a variable or non-recognized information volume is input, optimum compression processing on the compressed picture information is performed to prevent underflow and/or overflow to suppress deterioration of the picture quality. A compressed information analysis device 3 analyzes the structure of the picture type of the GOP of the compressed picture information input to the FF buffer 2. A bit allocation device 5 generates a pseudo GOP of the input compressed picture information, based on N frames stored in the FF buffer 2 and on the analysis result information stored in the information buffer 4, and allocates a pre-set code volume to respective pictures of the generated GOP so that the output compressed picture information will be at a second bitrate.

摘要翻译： 一种图像信息转换方法和装置，其中如果输入具有可变或未识别的信息量的压缩图像信息，则执行对压缩图像信息的最佳压缩处理以防止下溢和/或溢出以抑制图像的劣化 质量。 压缩信息分析装置3分析输入到FF缓冲器2的压缩图像信息的GOP的图像类型的结构。比特分配装置5基于存储在N帧中的N个帧来生成输入的压缩图像信息的伪GOP FF缓冲器2和存储在信息缓冲器4中的分析结果信息，并且将所预定的代码量分配给生成的GOP的各个图像，使得输出的压缩图像信息将处于第二位速率。

公开(公告)号：US06580830B1

公开(公告)日：2003-06-17

申请号：US09358032

申请日：1999-07-21

申请人： Kazushi Sato ,  Kenji Komori ,  Tetsuo Kaneko ,  Satoshi Mitsuhashi ,  Masami Goseki ,  Naofumi Yanagihara

发明人： Kazushi Sato ,  Kenji Komori ,  Tetsuo Kaneko ,  Satoshi Mitsuhashi ,  Masami Goseki ,  Naofumi Yanagihara

IPC分类号： G06K936

CPC分类号： H04N7/014 ,  G06F17/147 ,  H04N7/0125 ,  H04N19/122 ,  H04N19/132 ,  H04N19/157 ,  H04N19/176 ,  H04N19/523 ,  H04N19/59 ,  H04N19/61 ,  H04N19/80 ,  H04N19/90

摘要： An MPEG downdecoder is to be provided which eliminates dephasing of pixels of moving picture data without losing properties inherent in a picture obtained on interlaced scanning. In the case of a field DCT mode, 4×4 decimating IDCT is executed for phase correction for a ¼ pixel for pixels in the vertical direction of a top field and for phase correction for ¾ pixel for pixels in the vertical direction of a bottom field. In the case of a frame DCT mode, the totality of coefficients of a DCT block are IDCTed and separated into two pixel blocks associated with interlaced scanning. The low-frequency components of these two pixel blocks are IDCTed to synthesize the two pixel blocks. The pixels in the vertical direction of the top field are phase-corrected by a ¼ pixel, while those in the vertical direction of the bottom field are phase-corrected by a ¾ pixel.

摘要翻译： 将提供一种MPEG降解编码器，其消除了运动图像数据的像素的去相位，而不会损失在隔行扫描中获得的图像中固有的特性。 在场DCT模式的情况下，对顶场的垂直方向上的像素的1/4像素执行4×4抽取IDCT，并且对于底场的垂直方向上的像素的¾像素进行相位校正。 在帧DCT模式的情况下，DCT块的系数的总和被IDCT化并分离成与隔行扫描相关联的两个像素块。 这两个像素块的低频分量被IDCTed以合成两个像素块。 顶场的垂直方向上的像素被1/4像素相位校正，而底场的垂直方向上的像素被¾像素相位校正。

公开(公告)号：US06687296B1

公开(公告)日：2004-02-03

申请号：US09708255

申请日：2000-11-07

申请人： Kazushi Sato ,  Yu Liu ,  Naofumi Yanagihara

发明人： Kazushi Sato ,  Yu Liu ,  Naofumi Yanagihara

IPC分类号： H04N726

CPC分类号： H04N19/40 ,  H04N19/132 ,  H04N19/149 ,  H04N19/152 ,  H04N19/177 ,  H04N19/186 ,  H04N19/523 ,  H04N19/61

摘要： An apparatus and a method for transforming picture information can significantly reduce the bit rate. A picture information transform apparatus for receiving as input the compressed picture information obtained by coding the picture information of a plurality of picture type images by ways of orthogonal transform and motion compensation includes a variable length decoder 4 for performing a variable length decoding operation on the input compressed picture information, an inverse quantizer 5 for inversely quantizing the decoded information, a band limiter 7 for limiting the bandwidth, a quantizer 8 and a bit rate controller 9 for computationally determining the target bits for the coded images of each picture type by adaptively using a plurality of parameters operating as coefficients for the contents of the coded images of the picture type on the bais of the contents of the coded images of the picture type.

摘要翻译： 用于变换图像信息的装置和方法可以显着地降低比特率。 一种图像信息变换装置，用于作为输入接收通过正交变换和运动补偿的方式对多个图像类型图像的图像信息进行编码而获得的压缩图像信息，包括：可变长度解码器4，用于对输入进行可变长度解码操作 压缩图像信息，用于对解码信息进行逆量化的逆量化器5，用于限制带宽的频带限制器7，量化器8和比特率控制器9，用于通过自适应地使用每个图像类型的编码图像计算确定目标比特 作为图像类型的编码图像的内容的bais上的图像类型的编码图像的内容的系数的多个参数。

公开(公告)号：US06532309B1

公开(公告)日：2003-03-11

申请号：US09450614

申请日：1999-11-30

申请人： Kazushi Sato ,  Naofumi Yanagihara

发明人： Kazushi Sato ,  Naofumi Yanagihara

IPC分类号： G06K936

CPC分类号： H04N19/112 ,  G06T3/4084 ,  H04N19/45 ,  H04N19/60

摘要： In a pixel decoding method and apparatus, pixel dephasing caused for the field DCT mode and the frame DCT mode is to be eliminated to curtail the processing volume without detracting from the properties inherent in a picture produced on interlaced scanning. To this end, if the DCT mode is the field mode, a decimating DCT device for field mode 14 performs 4×4 decimating IDCT. If the DCT mode is the frame mode, the decimating DCT device for frame mode 15 performs IDCT on the totality of coefficients of the DCT block, separates the coefficients into two pixel blocks associated with the interlaced scanning and performs DCT separately for the separated two pixel blocks. The low frequency components of these two pixel blocks are IDCT and the two pixel are synthesized.

摘要翻译： 在像素解码方法和装置中，消除对于场DCT模式和帧DCT模式引起的像素去相位，以减少处理量，而不会降低隔行扫描中产生的图像中固有的属性。 为此，如果DCT模式是场模式，则场模式14的抽取DCT装置执行4×4抽取IDCT。 如果DCT模式是帧模式，则用于帧模式15的抽取DCT设备对DCT块的系数的总和执行IDCT，将系数分离成与隔行扫描相关联的两个像素块，并分离对分离的两个像素进行DCT 块。 这两个像素块的低频分量是IDCT，并且两个像素被合成。

公开(公告)号：US06748018B2

公开(公告)日：2004-06-08

申请号：US09369001

申请日：1999-08-05

申请人： Kazushi Sato ,  Kenji Komori ,  Tetsuo Kaneko ,  Satoshi Mitsuhashi ,  Naofumi Yanagihara

发明人： Kazushi Sato ,  Kenji Komori ,  Tetsuo Kaneko ,  Satoshi Mitsuhashi ,  Naofumi Yanagihara

IPC分类号： H04B166

CPC分类号： H04N19/59 ,  H04N19/112 ,  H04N19/117 ,  H04N19/132 ,  H04N19/139 ,  H04N19/156 ,  H04N19/159 ,  H04N19/16 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/48 ,  H04N19/523 ,  H04N19/61 ,  H04N19/90

摘要： An MPEG downdecoder is to be provided which eliminates dephasing of pixels of moving picture data without losing properties inherent in a picture obtained on interlaced scanning. If an interlaced picture is inputted, and the DCT mode is the field mode, an interlaced picture accommodating picture decoding unit 3 executes 4×4 decimating IDCT. If the DCT mode is the frame mode, the entire coefficients of the DCT block are IDCTed for separation into two pixel blocks associated with interlaced scanning. The separated two pixel blocks are DCTed. The coefficients of the low-frequency components are IDCTed and the two pixel blocks are synthesized together. A progressive picture accommodating picture decoding unit 2 is fed with a progressive picture. The coefficients of the low-frequency components of the DCT block are inverse orthogonal transformed.

摘要翻译： 将提供一种MPEG降解编码器，其消除了运动图像数据的像素的去相位，而不会损失在隔行扫描中获得的图像中固有的特性。 如果隔行扫描图像被输入，并且DCT模式是场模式，则隔行图像容纳图像解码单元3执行4×4抽取IDCT。 如果DCT模式是帧模式，则DCT块的整个系数被IDCTed分离成与隔行扫描相关联的两个像素块。 分离的两个像素块是DCT。 低频分量的系数被IDCTed并且两个像素块被合成在一起。 逐行图像适应图像解码单元2被馈送逐行图像。 DCT块的低频分量的系数被逆正交变换。

公开(公告)号：US06539056B1

公开(公告)日：2003-03-25

申请号：US09358451

申请日：1999-07-21

申请人： Kazushi Sato ,  Kenji Komori ,  Tetsuo Kaneko ,  Satoshi Mitsuhashi ,  Masami Goseki ,  Takao Terao ,  Naofumi Yanagihara

发明人： Kazushi Sato ,  Kenji Komori ,  Tetsuo Kaneko ,  Satoshi Mitsuhashi ,  Masami Goseki ,  Takao Terao ,  Naofumi Yanagihara

IPC分类号： H04N1102

CPC分类号： H04N19/59 ,  H04N19/117 ,  H04N19/159 ,  H04N19/16 ,  H04N19/186 ,  H04N19/48 ,  H04N19/51 ,  H04N19/523 ,  H04N19/61 ,  H04N19/90

摘要： An MPEG downdecoder is to be provided which eliminates dephasing of pixels during motion compensation to prevent deterioration of the picture quality ascribable to motion compensation. MPEG data of a high resolution picture are processed by decimating IDCT devices 14, 15 with 4×4 decimating IDCT to decode data of standard resolution picture data. In the case of the field motion prediction mode, a motion compensation device 18 interpolates respective pixels of a macro-block of reference picture data stored in a frame memory 17 to generate a macro-block constituted by pixels of ¼ pixel precision. In the case of the frame motion prediction mode, a motion compensation device 19 interpolates respective pixels of macro-block of reference picture data stored in the frame memory 17 to generate a macro-block constituted by pixels of ¼ pixel precision.

摘要翻译： 将提供一种在运动补偿期间消除像素的去相位以防止归因于运动补偿的图像质量劣化的MPEG下变频器。 通过用4×4抽取IDCT抽取IDCT设备14,15来处理高分辨率图像的MPEG数据，以对标准分辨率图像数据的数据进行解码。 在场运动预测模式的情况下，运动补偿装置18内插存储在帧存储器17中的参考图像数据的宏块的各个像素，以生成由1/4像素精度的像素构成的宏块。 在帧运动预测模式的情况下，运动补偿装置19内插存储在帧存储器17中的参考图像数据的宏块的各个像素，以生成由1/4像素精度的像素构成的宏块。

公开(公告)号：US06493391B1

公开(公告)日：2002-12-10

申请号：US09357895

申请日：1999-07-21

申请人： Kenji Komori ,  Tetsuo Kaneko ,  Kazushi Sato ,  Satoshi Mitsuhashi ,  Masami Goseki ,  Naofumi Yanagihara

发明人： Kenji Komori ,  Tetsuo Kaneko ,  Kazushi Sato ,  Satoshi Mitsuhashi ,  Masami Goseki ,  Naofumi Yanagihara

IPC分类号： H04B166

CPC分类号： H04N19/105 ,  H04N19/112 ,  H04N19/137 ,  H04N19/48 ,  H04N19/59 ,  H04N19/90

摘要： An MPEG downdecoder which eliminates picture quality deterioration ascribable to motion compensation. A decimating inverse discrete cosine transform unit 14 performs 4×4 decimating IDCT if the DCT mode is the field mode. If the DCT mode is the frame mode, a decimating IDCT unit for frame mode 15 applies IDCT to the totality of the coefficients of the DCT block and separates the DCT block into two pixel blocks in order to cope with the interlaced scanning. Each of the separated pixel blocks is processed with DCT. To reference picture data, pixels are interpolated using orthogonal transform by motion compensation units 18, 19 to generate virtual upper-order picture data of high resolution, which is processed with motion compensation. The motion-compensated virtual upper-order picture data is orthogonal transformed to decimate pixels to generate reference picture data used for addition.

摘要翻译： MPEG downdecoder，可消除归因于运动补偿的图像质量恶化。 如果DCT模式是场模式，则抽取逆离散余弦变换单元14执行4×4抽取IDCT。 如果DCT模式是帧模式，则用于帧模式15的抽取IDCT单元将IDCT应用于DCT块的系数的全部，并将DCT块分离成两个像素块，以便处理隔行扫描。 每个分离的像素块用DCT处理。 为了参考图像数据，使用由运动补偿单元18,19进行的正交变换来内插像素，以生成用运动补偿处理的高分辨率的虚拟高阶图像数据。 运动补偿虚拟高阶图像数据被正交变换以抽取像素以生成用于相加的参考图像数据。

公开(公告)号：US09270987B2

公开(公告)日：2016-02-23

申请号：US13978492

申请日：2012-01-04

申请人： Kazushi Sato

发明人： Kazushi Sato

IPC分类号： H04N19/157 ,  G06T9/00 ,  H04N19/176 ,  H04N19/70 ,  H04N19/46 ,  H04N19/30 ,  H04N19/117 ,  H04N19/12 ,  H04N19/132 ,  H04N19/152 ,  H04N19/184 ,  H04N19/82 ,  H04N19/85

CPC分类号： H04N19/82 ,  G06T9/007 ,  H04N19/117 ,  H04N19/12 ,  H04N19/124 ,  H04N19/132 ,  H04N19/152 ,  H04N19/157 ,  H04N19/176 ,  H04N19/184 ,  H04N19/30 ,  H04N19/44 ,  H04N19/46 ,  H04N19/70 ,  H04N19/85

摘要： The present technology relates to an image processing apparatus and method that are capable of enhancing encoding efficiency while suppressing a decrease in the efficiency of encoding processing. The image processing apparatus includes an encoding mode setter that sets, in units of coding units having a hierarchical structure, whether a non-compression mode is to be selected as an encoding mode for encoding image data, the non-compression mode being an encoding mode in which the image data is output as encoded data, and an encoder that encodes the image data in units of the coding units in accordance with a mode set by the encoding mode setter. The present disclosure can be applied to, for example, an image processing apparatus.

摘要翻译： 本技术涉及能够在抑制编码处理的效率降低的同时提高编码效率的图像处理装置和方法。 图像处理装置包括：编码模式设定器，以具有分层结构的编码单位为单位设定是否选择非压缩模式作为编码图像数据的编码模式，非压缩模式是编码模式 其中图像数据作为编码数据输出;以及编码器，其根据由编码模式设置器设置的模式以编码单元为单位对图像数据进行编码。 本公开可以应用于例如图像处理装置。

公开(公告)号：US09177392B2

公开(公告)日：2015-11-03

申请号：US14003063

申请日：2012-03-01

申请人： Kazushi Sato

发明人： Kazushi Sato

IPC分类号： G06K9/00 ,  G06T9/00 ,  H04N19/52 ,  H04N19/61 ,  H04N19/174 ,  H04N19/436

CPC分类号： G06T9/00 ,  H04N19/167 ,  H04N19/174 ,  H04N19/436 ,  H04N19/52 ,  H04N19/61 ,  H04N19/96

摘要： The present technique relates to an image processing apparatus and an image processing method which allow the encoding efficiency to be improved. The image processing apparatus includes: a determination unit which determines whether neighboring motion information is available or unavailable, the neighboring motion information being motion information of a neighboring region located around a current region and being used to encode motion information of the current region to be processed; and an encoding unit which encodes the motion information of the current region by using available motion information of another neighboring region in place of the motion information of the neighboring region determined by the determination unit to be unavailable. The present disclosure can be applied to an image processing apparatus.

摘要翻译： 本技术涉及允许提高编码效率的图像处理装置和图像处理方法。 图像处理装置包括：确定单元，其确定相邻运动信息是可用还是不可用，相邻运动信息是位于当前区域周围的相邻区域的运动信息，并且用于对要处理的当前区域的运动信息进行编码 ; 以及编码单元，其通过使用另一相邻区域的可用运动信息代替由确定单元确定的相邻区域的运动信息不可用来对当前区域的运动信息进行编码。 本公开可以应用于图像处理装置。